[SPARK-18520][ML] Add missing setXXXCol methods for BisectingKMeansModel and GaussianMixtureModel

## What changes were proposed in this pull request?
add `setFeaturesCol` and `setPredictionCol` for BiKModel and GMModel
add `setProbabilityCol` for GMModel
## How was this patch tested?
existing tests

Author: Zheng RuiFeng <ruifengz@foxmail.com>

Closes #15957 from zhengruifeng/bikm_set.

(cherry picked from commit 2dfabec3)
Signed-off-by: Yanbo Liang <ybliang8@gmail.com>